Finding the Fourth Proportional to 21,062,078.55, 31,593,117.83 and 17,660,856.15

Step by Step Solution

1. Step 1: Write the proportion equation
   21,062,078.55 : 31,593,117.83 = 17,660,856.15 : x
2. Step 2: Convert to fraction form
   21,062,078.55/31,593,117.83 = 17,660,856.15/x
3. Step 3: Cross multiply
   21,062,078.55x = 31,593,117.83 × 17,660,856.15
4. Step 4: Simplify right side
   21,062,078.55x = 557,961,509,237,325.81
5. Step 5: Solve for x
   x = 557,961,509,237,325.81/21,062,078.55
6. Step 6: Final answer
   x = 26,491,284.23